CVE-2016-7154: Use After Free
First published: Wed Sep 21 2016(Updated: )
Use-after-free vulnerability in the FIFO event channel code in Xen 4.4.x allows local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.4.0 | |
| Xen xen-unstable | =4.4.1 | |
| Xen xen-unstable | =4.4.2 | |
| Xen xen-unstable | =4.4.3 | |
| Xen xen-unstable | =4.4.4 |
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Reference Links
- http://support.citrix.com/article/CTX216071
- http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
- http://www.debian.org/security/2016/dsa-3663
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/92863
- http://www.securitytracker.com/id/1036754
- http://xenbits.xen.org/xsa/advisory-188.html
- http://xenbits.xen.org/xsa/xsa188.patch
Frequently Asked Questions
What is the severity of CVE-2016-7154?
CVE-2016-7154 is rated as high severity due to its potential to cause a denial of service or arbitrary code execution.
How do I fix CVE-2016-7154?
To fix CVE-2016-7154, you should update your Xen hypervisor to version 4.4.5 or later.
Who is affected by CVE-2016-7154?
CVE-2016-7154 affects local guest OS administrators running Xen versions 4.4.0 through 4.4.4.
What type of attack does CVE-2016-7154 enable?
CVE-2016-7154 enables local guest OS administrators to potentially crash the host or execute arbitrary code.
What software versions are vulnerable to CVE-2016-7154?
Xen versions 4.4.0, 4.4.1, 4.4.2, 4.4.3, and 4.4.4 are vulnerable to CVE-2016-7154.
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- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.4.0
- version/xen xen-unstable/4.4.1
- version/xen xen-unstable/4.4.2
- version/xen xen-unstable/4.4.3
- version/xen xen-unstable/4.4.4